<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
<div class="container" id="box">
    <div class="header">
        haader
    </div>
    <div class="nav" id="nav">
        nav
    </div>
    <div class="footer">
        footer
    </div>
</div>

<script src="dist/app.min.js"></script>
</body>
</html>